Introduction:The sequel to the 2009 GoTY, Batman Arkham Asylum. Unlike its predecessor, Arkham City allows Batman to roam free in his environment. The open world experience compliments the gameplay by giving one the freedom necessary to reign terror on the villains and thugs that are encountered throughout the game. There are many villains taking up the star roles however there are even more in the side quests which will take up most of your time, especially the Riddler Trophies/Riddles.

Note: The PC version of the game has the Catwoman DLC as part of the original 1000G (no online pass function), and six achievements have been removed with some of the achievement values changed to make everything fit. The achievements missing from the PC version are:

Forensics Expert

Distress Flare

Ring Ring

Gotham Base Jumper

Catch

50x Combo

Step 1, Story:
Play through the story and experience everything that the game has to offer. Play on Normal or Hard in order to unlock New Game+. You can work on grabbing some of the easier Riddler things while you play, but you will need all your gadgets to get the final ones and it is easier to do post-game, so you may as well wait. Same goes for side-quests. See Step 2.

Step 2, Side-Quests/Collectibles:
After beating the game you are allowed to free roam the city. Use this time to do all the side missions, collect all the trophies/riddles and do all the physical challenges.

Step 3, New Game+:
Play through the game one more time but this time the difficulty is basically Very Hard Mode. Enemies are smarter, they have better weapons and equipment, much more difficult encounters, challenging boss fights and to top it all off no counter attack indicator. However, you do start with all your gadgets and power ups so no need to fret.

Step 4, Challenges:
Complete all of the Riddler's Revenge challenges to gain 100% completion in the game, and this should also round out your 1000 Gamerscore.

These are all story related achievements and cannot be missed. If you need help during the story at all, this walkthrough should help.

Twice Nightly 75 Complete New Game Plus

You must complete the game on Normal or Hard to unlock New Game Plus. You can start this playthrough from its own icon on the main menu. Side Missions are not required for this achievement, though they are for "Perfect Knight - Day 2" so you should work on them while you go anyway.

Perfect Knight - Day 2 75 Main Story, Side Missions, Upgrades, Collectables, New Game Plus and Riddlers Revenge (as Batman)

To 100% the game you will need the following done:

Complete the story on either Normal or Hard AND New Game +

Complete all side-missions on BOTH save files

Complete all 400 Riddler Challenges once (data is shared on both save files)

Obtain all Gadgets and Upgrades once (data is shared on both save files)

Obtain Gold on all Riddler's Revenge challenges (as Batman)

In other words: You will have two save files. One on either Normal or Hard difficulty and one for New Game Plus. You will need to complete the story twice, complete all side-missions twice, complete all 400 Riddler Challenges once, collect all Gadgets once, purchase all Upgrades once and complete all Riddler's Revenge challenges once.

For Riddler Challenge help, see the "Genius" achievement. For help on the Gadgets and Upgrades, see the "Fully Loaded" achievement. For Riddler's Revenge, you need all 72 Ranked medals and all 108 Campaign medals (as Batman), see "Gold Revenge" and "Campaign Gold" for help on those.

You must level up and purchase all the upgrades for Batman. You will be provided all but 3 gadgets. One is available for pickup up after you finish up at the Museum. Another one is not available until the second time that you visit the Steel Mill. The last one requires that you complete the first four AR Training exercises. You will be notified of the side mission when a new gadget is available. The code to hack TYGER security terminals is considered a gadget as well, you will get this at the end of the game.

You must complete the "Bargaining Chip" achievement to unlock the gadget from the Steel Mill.

Forensic Expert 10
Collect enough evidence to locate the gun for hire

See "Contract Terminated".

Note: Non-existent in the PC version.

Contract Terminated 25
Stop the contract operative

This side-quest (Shot in the Dark) should trigger early in the game as you pass the location marked "1" on the map below. Once you finish that, the next portion begins at "4" and you will follow along as such. If you are having trouble triggering the other locations, try again later once you get further in the story or reload the city by entering and leaving a building or quitting to the menu and staring the game up again. Simply follow the numbers on the map to finish each section of the quest.

This side-quest (Identity Thief) is quite a bit harder to trigger. You need to basically be standing on top of the body for the game to register you've found it. Again, follow the numbers on the map below to proceed through the questline. If you are having trouble triggering the other locations try again later once you get further in the story or reload the city by entering and leaving a building or quitting to the menu and staring the game up again.

The Mystery Watcher appears at the locations below, which correspond to the numbers on the map. If you miss seeing him, you can return at any time to find him standing there - the achievement is not missable. If he is not there, try exiting and reloading the game. During the story, he only shows up in this specific order and you will need to speak with him at one to make him move to the next. Post-game, he will sort of be at all the locations at once and you can do them in any order.

As soon as you leave the courthouse for the first time, he is on the building across from you.

After leaving the Steel Mill, he can be found at the top of the Ferris wheel.

Finishing up at Wonder City and exiting from the Subway you will be told to interrogate someone. During the cutscene the mystery watcher can be seen on the building opposite of you.

Revisiting the GCPD for the second time he can be seen, again, on the building opposite from you.

After finding him at the four locations above, your map will open and you will need to enlarge and rotate the symbols to fit the four points you spoke with him at. Doing so will reveal the fifth location, marked with a "5" in the map. Head there to finish the quest (Watcher in the Wings).

After leaving the Steel Mill for the first time you will be notified of this mission (Fragile Alliance). This mission is near the water in the building next to the big cranes with the giant bear on top. This is a very straight forward mission as all the objectives are marked on your map and you pass by them all during the story. The final one will only be available late in the story. Destroy the objectives with your explosive gel.

The telephone encounters for this quest (Cold Call Killer) are entirely random, just pay attention to your Local Surveillance box. Once you hear a phone ringing, hunt it down. You'll then have to rush to a second phone and follow around his tracing signal with your thumbstick. Once you trace the call and reveal his location, enter his hideout to subdue the killer.

After submitting to you, Victor Fries will ask for your help finding Nora. Go to the area by the large cranes near Joker's Fun Land. Make a raft on the water, pull yourself to the destructible wall and take it down with the explosive gel. Go inside, take out the goons and return to Victor to let him know she is safe and finish the quest (Heart of Ice).

Complete all eight AR Training exercises to unlock the achievement. The first four unlock on your way to the Steel Mill for the first time, and completing them unlocks the grapnel boost upgrade which allows you to glide indefinitely by grappling from building to building without ever touching the ground. The trick to the advanced exercises is to time your dives properly. Stopping the dive early by letting go of the trigger and barely pulling back helps make it through the tight corridors. The video below contains all the exercises.

Ever vigilant, stop all 16 random crimes in Arkham City (Arkham Assault). A crime is taking place when you are picking up hostile chatter in the Local Surveillance feed. Use detective mode to track who is talking, then knock out the henchman to free the Political Prisoner. The map will sometimes display a pulsing hexagon in the location of a crime even when you're not close enough to hear the chatter, so check your map often.

IQ Test 10 Solve the first riddle

The church will be taken over by the Riddler after you leave the Steel Mill. Pay a visit to the church to have your first encounter with him. Scan the organ at the back of the room to solve the riddle.

After this encounter you will be able to interrogate green riddler goons for information which will show where Riddler Trophies and Riddles are on your map.

To get this early you can do it offline. If you want to get an online time stamp for the achievement then you will have to connect to XBL as soon as you engage conversation with him on the last date or do all of them except the one that is closest to the current date and then complete it on that date.

Calendar Man is found in the basement of the Courthouse and can be visited at the beginning of the game. Speak to Calendar Man on each of the following dates that can be found on the calendar in his cell. You must exit the building in order for the achievement progress to save. If done correctly you will notice the next time you speak to him the date is scribbled off the calender. It will take approximately 30 minutes to complete if you do it offline and simply change your console's clock to each of the following dates:

Dates are subject to change according to the year.
Combat, Challenges and Miscellaneous

Pay Your Respects 5 A moment of remembrance

In Crime Alley next to Finnigan's Bar, press near the chalk outlines of your parents. Wait for over one minute until the achievement unlocks. If you move before it unlocks, you will need to start over. The spot you're looking for is at the Custom Waypoint in the image below, or follow the video.

Gotham Base Jumper 5 Jump off the tallest building in Arkham City and glide for 1 minute without touching the ground

You must climb the Wonder Tower during the main story, but you can return post-game to do this as well. Climb on top of the Wonder Tower, jump off and glide around for one minute. Power Grappling does not stop the glide, but you can simply hit the edge of the Restricted Zone to be turned around and push back up in the air to glide indefinitely.

Catch 5 Find someone to play remote Batarang catch with You must throw the remote Batarang at the Mystery Watcher that you encounter multiple times in the game. This can be missed the first time through however it can still be done in New Game+ right from the start since you have all the gadgets. If you miss it both times then a new save will be required thus classifying this achievement as missable.

You can see the Catch achievement in the first 30 seconds of the Mystery Stalker video.

This achievement can be done at many different times throughout the game but is easiest done during a sequence like the one in the video below. It is best to get the FreeFlow Focus Combat upgrade to increase movement speed and reaction times as well as the Critical Strikes upgrade that increases the combo by x2 for each successful hit.

Gadget Attack 5 Use 5 different Quickfire gadgets in one fight (any play mode)

You unlock the last combat gadget about 75% of the way through the game. Once you have all the gadgets you must use all of them during one encounter. It does not have to be in the same combo but it does need to hit an enemy.

This is relatively easy, though if you are having trouble just keep tapping , to jump over enemies without getting hit. Remember to counter often and use special takedowns to remove enemies completely. The first challenge is likely the easiest to do this on.

Really the only skill-oriented achievement. You must unlock and perform all the moves at Batman's disposal in one unbroken combo. This can be done anywhere that you fight goons. It is highly recommended that you unlock Special Combo Boost to decrease the requirement for Special Combos from x8 to x5 and Critical Strikes to get a higher combo easier.

Special Combo Multi Ground Takedown (+) - must have at least 1 enemy dazed on the ground before doing this or it wont count

Special Combo Disarm and Destroy (+) - Can be done against people who are holding any object such as a knife or sledge hammer

Special Combo Bat Swarm (+)

Special Combo Takedown (+)

Finishers

Ground Pound (+) - Used to finish off an enemy when they are dazed on the ground

Beat Down Finisher (, repeatedly)

The easiest level seems to be the "Survival of the Fittest" Combat challenge. There are just enough enemies to perform all the required moves in all of the last three rounds so you have a few shots at it without needing to restart.

Gold Revenge 40 Obtain all 72 medals on the original Arkham City ranked maps (as Batman)

Perform well enough to unlock the Gold medal on all 24 Arkham City ranked maps as Batman. To unlock these maps, you will have to collect Riddler trophies during the main game. See "Genius" for more info on those.
There are twelve Combat challenges which are fairly easy. Focus more on keeping your flow going than throwing in a lot of variation. You're more likely to make a mistake trying to throw an explosive gel down than just using attacks, dodges and counters. When the titans show up, jump over them to confuse them for a few seconds. Against either of the twins, continually beat them and use Bat Swarm whenever possible to keep the other goons off you. You'll get your combo extremely high by the time they die and rack up the points.

The twelve Predator challenges are slightly more difficult. You'll have to perform three specific tasks in each map, all during the same attempt. Press at any time to view their requirements. Not too many tips I can give for these, the videos in the link below do better justice than words can.

Note: Because he was playing on Easy difficulty, PowerPyx had the ability to recharge his smoke pellets. If you're playing on a harder difficulty, you'll need to slightly alter your play style compared to what he does in some situations.

Campaign Gold 40 Obtain all 108 medals on the original Arkham City campaigns (as Batman)

Perform well enough to unlock the Gold medal on all 12 Arkham City campaigns as Batman. To unlock these maps, you will have to collect Riddler trophies during the main game. See "Genius" for more info on those.
The campaigns are a combination of previous Combat and Predator challenges. They come in sets of three, with three medals to earn in each section for nine total in each. You have the ability to retry up to three times if you fail to get all three medals on a section, because you'll need all nine medals in one run for each.

You are also given a set of mutators that will alter the gameplay which must all be used at some point during the campaign. You can use up to three in a single section so if you feel confident about a section you can use a bunch to get them out of the way early, making a harder one down the line a little easier.

Much like collecting the green icons as Batman, the purple ones found throughout Arkham City are to be collected with Catwoman (and in fact can't be collected as Batman). These are all much more straightforward than Batman's since she does not have any gadgets. While playing the story, keep interrogating the glowing green enemies, doing so will show the locations of these on the map.

Arkham City Sirens 25 Drop in on an old friend

Story related and can not be missed. This section is basically just a three-tiered combat challenge.

Pick Pocket 25
Steal the score of a lifetime

Story related and can not be missed. Use stealth to steal three keycards, return to the computer to unlock the vault, then proceed to knock out all the enemies, enter the vault and finish a large encounter.

Family Jewels 40
Retrieve your stolen goods

After you finish the main story as Batman, this final section of Catwoman's story takes place. When you get to the Two-Face fight, the enemies will continually respawn until you take him out so just wait for him to be alone up top, knock him over and then just keep hitting him.

After that, the enemies with your loot will have a glowing diamond on them when you use thief vision. They can be found in the Bowery and Park Row areas of the city. Simply knock them out in any fashion to retrieve it and once you fill the red bar under your health the achievement will unlock.

If you didn't have the Catwoman DLC while playing the main story, you can do them at any time from a selection on the main menu of the game.

Feline Revenge 25 Obtain all 72 medals on the original Arkham City ranked maps (as Catwoman)

Catwoman's challenges are fairly similar to Batman's and are done on all the same maps. See this thread for videos.

Campaign Kitty 25 Obtain all 108 medals on the original Arkham City campaigns (as Catwoman)

Catwoman's challenges are fairly similar to Batman's and are done on all the same maps. See this thread for videos.

Complete all 8 AR training exercises to unlock the achievement. Completing the first 4 unlocks the grapnel boost which allows you to glide indefinitely by grappling from building to building without ever touching the ground.

I realize skill can be accounted but the challenges/campaigns are HUGE time sinks. Especially the campaigns, this stuff is seriously tough lol. I'd bet 50~ hours to fully complete 1150 or another 10+ for 1200 :|.

This may or may not be of help, but on some of the "timed" riddler sequences you can use explosive gel to set it off instead of the batarang.

Also it may be useful to note you need to wait a minute or so until you get the achievement for visiting crime alley (wait a minute after pressing a on the rose|) It probably seems obvious, but when I did it I got up after the music ended and the cheev didn't pop.

Just incase anyone is wondering, Mystery Stalker can be finished post main story. You don't need to find the guy throughout the play through. But if you complete it prior to throwing a remote batarang then you screwed yourself outta 5 points

This game is wicked, fairly enjoyed it so far, and so much to do! Great guide btw have made use of your side mission video's quite a bit so far. cheers

do the first custom combat challenge and select the modifier Takedown Projectiles. now your quickfire batarangs are instant KOs. incredibly easy in case anyone was having problems getting hit, which they shouldnt but you never know.